[Beowulf] petabyte for $117k

Marian Marinov mm at yuhu.biz
Wed Sep 2 05:44:12 EDT 2009


On Wednesday 02 September 2009 11:23:46 Eugen Leitl wrote:
> On Tue, Sep 01, 2009 at 04:28:10PM -0700, Bill Broadley wrote:
> > I'm very curious to hear how they are in production.  I've had vibration
> > of
>
> My thoughts exactly.
>
> > large sets of drives basically render the consumer drives useless. 
> > Timeouts, highly variable performance, drives constantly dropping out of
> > raids.  It became especially fun when the heavy I/O of a rebuild knocks
> > additional drives out of the array.
>
> Also my experience down to a T.
>
> > I'd also worry that running the consumer drives well out of spec (both in
> > duty cycle and vibration) might significantly shorten their lives.
> >
> > Are the 7200.11 1.5TB seagate's particularly vibration resistant?
>
> No. They're awful, as the entire 7200.11 line (I've had failures
> in 750 GByte, 1 TByte, 1.5 TByte, everywhere, even with reasonably
> small drive populations).

I have the same experience with those drives. Not really reliable.

>
> > Maybe those $0.23 nylon standoffs work better than I'd expect.

-- 
Best regards,
Marian Marinov
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